Hi,
it is certainly possible, and you do not need a SAN.

First you need a host that can handle the throughput. You need good disk storage and 
good network connectivity. I certainly don't backup as mush data as some people, but 
rate at which I do is pretty good. Ex:
08/22/02 03:22:47 ANE4952I (Session: 16207, Node: UNXR) Total number of objects 
inspected:  119,626
08/22/02 03:22:47 ANE4954I (Session: 16207, Node: UNXR) Total number of objects backed 
up:      592
08/22/02 03:22:47 ANE4958I (Session: 16207, Node: UNXR) Total number of objects 
updated:          0
08/22/02 03:22:47 ANE4960I (Session: 16207, Node: UNXR) Total number of objects 
rebound:          0
08/22/02 03:22:47 ANE4957I (Session: 16207, Node: UNXR) Total number of objects 
deleted:          0
08/22/02 03:22:47 ANE4970I (Session: 16207, Node: UNXR) Total number of objects 
expired:        518
08/22/02 03:22:47 ANE4959I (Session: 16207, Node: UNXR) Total number of objects 
failed:           0
08/22/02 03:22:47 ANE4961I (Session: 16207, Node: UNXR) Total number of bytes 
transferred:    57.41 GB
08/22/02 03:22:47 ANE4963I (Session: 16207, Node: UNXR) Data transfer time: 3,381.59 
sec
08/22/02 03:22:47 ANE4966I (Session: 16207, Node: UNXR) Network data transfer rate:    
    17,803.27 KB/sec
08/22/02 03:22:47 ANE4967I (Session: 16207, Node: UNXR) Aggregate data transfer rate:  
    26,589.87 KB/sec
08/22/02 03:22:47 ANE4968I (Session: 16207, Node: UNXR) Objects compressed by:         
           0%
08/22/02 03:22:47 ANE4964I (Session: 16207, Node: UNXR) Elapsed processing time:       
     00:37:44

26, 589 KB/s is 91GB/hr. This is not over a network but from local storage to an LTO.

Example 2:
08/21/02 13:49:16 ANE4952I (Session: 15962, Node: UNXP) Total number of objects 
inspected:  117 144
08/21/02 13:49:16 ANE4954I (Session: 15962, Node: UNXP) Total number of objects backed 
up:    2 002
08/21/02 13:49:16 ANE4958I (Session: 15962, Node: UNXP) Total number of objects 
updated:          2
08/21/02 13:49:16 ANE4960I (Session: 15962, Node: UNXP) Total number of objects 
rebound:          0
08/21/02 13:49:16 ANE4957I (Session: 15962, Node: UNXP) Total number of objects 
deleted:          0
08/21/02 13:49:16 ANE4970I (Session: 15962, Node: UNXP) Total number of objects 
expired:        857
08/21/02 13:49:16 ANE4959I (Session: 15962, Node: UNXP) Total number of objects 
failed:           0
08/21/02 13:49:16 ANE4961I (Session: 15962, Node: UNXP) Total number of bytes 
transferred:    34.94 GB
08/21/02 13:49:16 ANE4963I (Session: 15962, Node: UNXP) Data transfer time: 1 276.17 
sec
08/21/02 13:49:16 ANE4966I (Session: 15962, Node: UNXP) Network data transfer rate:    
    28 714.35 KB/sec
08/21/02 13:49:16 ANE4967I (Session: 15962, Node: UNXP) Aggregate data transfer rate:  
    31 797.51 KB/sec
08/21/02 13:49:16 ANE4968I (Session: 15962, Node: UNXP) Objects compressed by:         
           0%
08/21/02 13:49:16 ANE4964I (Session: 15962, Node: UNXP) Elapsed processing time:       
     00:19:12

This is over an SP Switch direct to tape. Granted my file size is generally large - it 
is a Sybase database, but it is the configuration of the TSM environment that will 
decide how fast things will go.

Again, this is certainly possible as long as your company can afford the money to buy 
good hardware and the time to manage, analyze and make changes.
Miles


----------------------------------------------------------------------------------------------
Miles Purdy 
System Manager
Agriculture and Agri-Food Canada,
Information Systems Team,
Farm Income Programs Directorate
Winnipeg, MB, CA
[EMAIL PROTECTED]
ph: (204) 984-1602 fax: (204) 983-7557

"If you hold a UNIX shell up to your ear, can you hear the C?"
-------------------------------------------------------------------------------------------------

>>> [EMAIL PROTECTED] 22-Aug-02 1:36:21 AM >>>
Hi,

what is your opinion about backing up or restoring 300GB data with TSM
within 12 hours from one client? Possible or not? Do I have to use a SAN
that I get acceptable transfer rates? If there is anybody out there who
backs up such a big amount of data:

How is your "TSM"-area constructed? (e.g. Server-type, LAN, SAN ...)

MfG
Sascha Br�uning


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